i have a 7 month old araucana cockerel that I have noticed has lost a lot of weight in a short period of time since bringing home from a show. He also has slimmy stool that soils his back end. I gave him ivermectin thinking he had worms. Maybe not enough? He Eats a lot still. Now his comb is turning black and he is staggering about. Help! he is the cornerstone of a breeding program.